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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "EditingRange.h"
#include <WebCore/FrameSelection.h>
#include <WebCore/LocalFrame.h>
#include <WebCore/TextIterator.h>
#include <WebCore/VisibleUnits.h>
namespace WebKit {
std::optional<WebCore::SimpleRange> EditingRange::toRange(WebCore::LocalFrame& frame, const EditingRange& editingRange, EditingRangeIsRelativeTo base)
{
WebCore::CharacterRange range { editingRange.location, editingRange.length };
if (base == EditingRangeIsRelativeTo::EditableRoot) {
// Our critical assumption is that this code path is called by input methods that
// concentrate on a given area containing the selection.
// We have to do this because of text fields and textareas. The DOM for those is not
// directly in the document DOM, so serialization is problematic. Our solution is
// to use the root editable element of the selection start as the positional base.
// That fits with AppKit's idea of an input context.
RefPtr element = frame.selection().rootEditableElementOrDocumentElement();
if (!element)
return std::nullopt;
return resolveCharacterRange(makeRangeSelectingNodeContents(*element), range);
}
ASSERT(base == EditingRangeIsRelativeTo::Paragraph);
auto paragraphStart = makeBoundaryPoint(startOfParagraph(frame.selection().selection().visibleStart()));
if (!paragraphStart)
return std::nullopt;
auto scopeEnd = makeBoundaryPointAfterNodeContents(Ref { paragraphStart->container->treeScope().rootNode() });
return WebCore::resolveCharacterRange({ WTFMove(*paragraphStart), WTFMove(scopeEnd) }, range);
}
EditingRange EditingRange::fromRange(WebCore::LocalFrame& frame, const std::optional<WebCore::SimpleRange>& range, EditingRangeIsRelativeTo editingRangeIsRelativeTo)
{
ASSERT(editingRangeIsRelativeTo == EditingRangeIsRelativeTo::EditableRoot);
if (!range)
return { };
RefPtr element = frame.selection().rootEditableElementOrDocumentElement();
if (!element)
return { };
auto relativeRange = characterRange(makeBoundaryPointBeforeNodeContents(*element), *range);
return EditingRange(relativeRange.location, relativeRange.length);
}
} // namespace WebKit
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